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13190971 = 411931667
BaseRepresentation
bin110010010100…
…011100111011
3220211011121111
4302110130323
511334102341
61150421151
7220056433
oct62243473
926734544
1013190971
11749a632
1245017b7
13296b111
141a752c3
151258681
hexc9473b

13190971 has 8 divisors (see below), whose sum is σ = 13590864. Its totient is φ = 12794880.

The previous prime is 13190951. The next prime is 13190977. The reversal of 13190971 is 17909131.

13190971 = T269 + T270 + ... + T461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13190971 - 25 = 13190939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13190977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7080 + ... + 8746.

It is an arithmetic number, because the mean of its divisors is an integer number (1698858).

Almost surely, 213190971 is an apocalyptic number.

13190971 is a deficient number, since it is larger than the sum of its proper divisors (399893).

13190971 is a wasteful number, since it uses less digits than its factorization.

13190971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901.

The product of its (nonzero) digits is 1701, while the sum is 31.

The square root of 13190971 is about 3631.9376371298. The cubic root of 13190971 is about 236.2792526509.

It can be divided in two parts, 13190 and 971, that added together give a square (14161 = 1192).

The spelling of 13190971 in words is "thirteen million, one hundred ninety thousand, nine hundred seventy-one".

Divisors: 1 41 193 1667 7913 68347 321731 13190971